Structure 16654800000000 · Cook County, IL

Forest Glen Av over N Branch Chicago Riv

Carries Forest Glen Av over N Branch Chicago Riv, 5650 N & 5000 W.

Overall conditionGood

Set by its lowest-rated component: Superstructure and Substructure at 7 of 9.

How ratings work
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT90 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 7/9Substructure 7/9

90 ft end to end, longest span 42 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a rigid-frame bridge.

Built200422 years old
Length89.9 ft27.4 m
Daily traffic3,650counted 2022
Last inspectedJuly 2024every 24 months

Location

StateIllinois
CountyCook
Location5650 N & 5000 W
CarriesForest Glen Av
CrossesN Branch Chicago Riv
Coordinates41.98324, -87.75242

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length89.9 ft (27.4 m)
Max Span42.0 ft (12.8 m)
Deck Width50.2 ft (15.3 m)
Deck Area419.2 sq m
Main Spans2
Year Built2004

Traffic

Avg Daily Traffic3,650 (2022)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number016654800000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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